fix env flag

pkg/kubectl/cmd/run.go

@@ -117,7 +117,7 @@ func addRunFlags(cmd *cobra.Command) {
 	cmd.Flags().IntP("replicas", "r", 1, "Number of replicas to create for this container. Default is 1.")
 	cmd.Flags().Bool("rm", false, "If true, delete resources created in this command for attached containers.")
 	cmd.Flags().String("overrides", "", i18n.T("An inline JSON override for the generated object. If this is non-empty, it is used to override the generated object. Requires that the object supply a valid apiVersion field."))
-	cmd.Flags().StringSlice("env", []string{}, "Environment variables to set in the container")
+	cmd.Flags().StringArray("env", []string{}, "Environment variables to set in the container")
 	cmd.Flags().String("port", "", i18n.T("The port that this container exposes.  If --expose is true, this is also the port used by the service that is created."))
 	cmd.Flags().Int("hostport", -1, "The host port mapping for the container port. To demonstrate a single-machine container.")
 	cmd.Flags().StringP("labels", "l", "", "Labels to apply to the pod(s).")
@@ -257,7 +257,7 @@ func Run(f cmdutil.Factory, cmdIn io.Reader, cmdOut, cmdErr io.Writer, cmd *cobr
 		params["args"] = args[1:]
 	}
 
-	params["env"] = cmdutil.GetFlagStringSlice(cmd, "env")
+	params["env"] = cmdutil.GetFlagStringArray(cmd, "env")
 
 	obj, _, mapper, mapping, err := createGeneratedObject(f, cmd, generator, names, params, cmdutil.GetFlagString(cmd, "overrides"), namespace)
 	if err != nil {